I am using payflowpro and getting error "Could not create SSL/TLS secure channel" .
It sounds like your server is not configured to use the TLS 1.2 protocol with HTTP requests. More information can be found at this article we posted when this first started happening. Most importantly:
If you want to use TLS 1.2 you’ll need to upgrade to OpenSSL 1.0.1 as a minimum, and then you’ll be able to set CURLOPT_SSLVERSION to 6 (TLS 1.2).
If you want TLS 1.2 to be used automatically during SSL requests, you’ll also need to upgrade to PHP 5.5.19+ (this is the ideal solution but many projects are still on older PHP versions).
Are you working with PHP? If so, are you able to setup a page with phpinfo() in it and provide the URL for quick review?